gistfile1.txt

class Stock < ActiveRecord::Base
  attr_accessible :issuer, :portfolio_id

  has_many :portfolios_stocks  
  has_many :portfolios, :through => :portfolios_stocks
end



class Portfolio < ActiveRecord::Base
  attr_accessible :fund_id, :period
  
  belongs_to :fund
  has_many :portfolios_stocks
  has_many :stocks, :through => :portfolios_stocks
end



class Fund < ActiveRecord::Base
  attr_accessible :name
  
  has_many :portfolios
end

class PortfolioStock < ActiveRecord::Base
  self.table_name='portfolios_stocks'

  belongs_to :stock
  belongs_to :portfolio
end